Q. I want to read a series of files named 'filexxx.dat' where xxx vary from 000 to 015. How can I do that in AVS/Express?

A. Use the str_format command to build the filename strings in conjunction with the 'Loop' module to generate the values from 0 to 15:

macro animated_filename { 
	int+IPort2 index; 
	string+OPort2 filename => str_format("file%3d.dat",index); 
};